Yes, "ever" works as an intensifier in the perfect environment. When you refer to a past event, keep in mind that you must keep the reference to time in order. If you went to a concert last week and you now try to talk about the experience with your friend who didn't make it to the concert.
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Anonymousmost perfectYou can't have degrees of perfection, so this combination is not good. It is not germane to your question, however, so I'm going to ignore it. (most beautiful would work.)
AnonymousIf we take out the word "ever" and replace it with the phrase "thus far" (and put that phrase at the end of the sentence), I
AnonymousHe said that it was the most perfect event he had ever seen.
I think for the above sentence, which I wrote in the starting post, it can be said that the following sentence would have a similar meaning or pretty much has the same effect in terms of what it tries to say, although it would be unusual to see t